慢性化脓性骨髓炎的主要X线表现是()
A.骨干增粗
B.骨膜增厚
C.骨皮质增厚
D.骨质硬化增生
E.骨质破坏
参考答案:D
(2013·兰州名校二模)She will tell us why she feels so strongly that each of us has a role ________ in making the earth a better place to live in.
A.to have played
B.played
C.playing
D.to play
( )对于 网络 相当于运输 对于 ( )
A.电脑 货物
B.流量 交通
C.交流 航线
D.查询 车辆